Information on the location
The Land of Make Believe, also known as the Neighborhood of Make Believe, is a fictional kingdom inhabited by hand puppet characters, often visited by Mister Rogers, in the children's PBS television show Mister Rogers' Neighborhood. It is located inside of Mister Rogers' house.
Appearance in the rap battle
Mr. T was briefly seen here, along with Trolley the Train (as well as inside of Trolley the Train) when he said the line, "You couldn't even beat me in the Land of Make Believe!"